Matt Kemp and his teammates didn't spent much time celebrating their three-game sweep of the slumping Colorado Rockies. All their attention was focused on whether his troublesome left hamstring would result in a lengthy absence from the lineup. Kemp, who leads the Los Angeles Dodgers with 12 homers and a .359 batting average, left Sunday's 11-5 victory because of an irritated left hamstring after grounding out in the third inning. The All-Star center fielder has played in 399 consecutive games, the longest current streak in the majors, but that streak is in serious jeopardy.